1. A polite greeting used in the morning, typically before noon, to wish someone a good day
I greeted my colleague with a cheerful 'good morning' as I arrived at the office.
Cumprimentei meu colega com um alegre 'bom dia' ao chegar no escritório.
2. The period of daytime from sunrise until noon
We spent the good morning hours enjoying breakfast on the terrace.
Passamos as horas do bom dia desfrutando do café da manhã no terraço.